Low-spill coupling assembly

ABSTRACT

A coupling system includes a female coupling device, the female coupling device including a first main body with a first front face, the first front face defining a first opening leading into a first fluid passageway; a stem having a stem head positioned within a sleeve; a first spring positioned about the stem that biases the sleeve into a closed position; a first seal that seals between the main body and the sleeve; a second seal that seals between the sleeve and the stem head; and a third seal that is positioned at the opening of the main body. The coupling system includes a male coupling device, the male coupling device including a second main body with a second front face, the second front face defining a second opening leading into a second fluid passageway; a valve member and a second spring positioned within the second fluid passageway; and a major seal that seals between the second main body and the valve member. The second main body of the male coupling device is capable of being inserted into the first opening of the first main body of the female coupling device so that the first seal and the third seal of the female coupling device engage the second main body of the male coupling device. The sleeve and the valve member are displaced against the first and second springs such that the second seal and the major seal are disengaged so that fluid flows through the first and second fluid passageways.

CROSS-REFERENCE TO RELATED APPLICATIONS

This patent application is a continuation of and claims priority to U.S.patent application Ser. No. 16/668,537, filed Oct. 30, 2019, which is acontinuation of and claims priority to U.S. patent application Ser. No.14/567,254, filed on Dec. 11, 2014, which is a continuation-in-part ofU.S. patent application Ser. No. 14/212,322, filed on Mar. 14, 2014,which is a nonprovisional of and claims priority to U.S. PatentApplication No. 61/799,612, filed on Mar. 15, 2013, the disclosures ofall of which are expressly incorporated herein by reference in itsentirety.

BACKGROUND

Coupling assemblies typically include female and male couplings that areconnected to create a fluid flow path therebetween. Such couplingassemblies can be used in various applications, including biomedicalapplications, beverage dispensing, instrument connections, photochemicalhandling, liquid cooling of electronics, ink handling, and others.

SUMMARY

In one aspect, a coupling system includes: a female coupling device, thefemale coupling device including a first main body with a first frontface, the first front face defining a first opening leading into a firstfluid passageway; a stem having a stem head positioned within a sleeve;a first spring positioned about the stem that biases the sleeve into aclosed position; a first seal that seals between the main body and thesleeve; a second seal that seals between the sleeve and the stem head;and a third seal that is positioned at the opening of the main body. Thecoupling system includes: a male coupling device, the male couplingdevice including a second main body with a second front face, the secondfront face defining a second opening leading into a second fluidpassageway; a valve member and a second spring positioned within thesecond fluid passageway; and a major seal that seals between the secondmain body and the valve member. The second main body of the malecoupling device is capable of being inserted into the first opening ofthe first main body of the female coupling device so that the first sealand the third seal of the female coupling device engage the second mainbody of the male coupling device. The sleeve and the valve member aredisplaced against the first and second springs such that the second sealand the major seal are disengaged so that fluid flows through the firstand second fluid passageways.

In another aspect, a female coupling device includes: a main body havinga front face, the front face defining an opening leading into a fluidpassageway; a stem having a stem head positioned within a sleeve; aspring positioned about the stem that biases the sleeve into a closedposition; a first seal that seals between the main body and the sleeve;a second seal that seals between the sleeve and the stem head; and athird seal that is positioned at the opening of the main body to sealagainst a mating male coupling device. The male coupling device iscapable of being inserted into the opening of the main body of thefemale coupling device.

In a further aspect, a female coupling device includes: a main bodyhaving a front face, the front face defining an opening leading into afluid passageway; a stem having a stem head positioned within a sleeve;a spring positioned about the stem that biases the sleeve into a closedposition; a first seal that seals between the main body and the sleeve;a second seal that seals between the sleeve and the stem head; a thirdseal that is positioned at the opening of the main body to seal againsta mating male coupling device; and a clip member slidably mounted on thefemale coupling device, the clip member slidable between a connectingposition wherein the clip member engages the mating male coupling deviceand a disconnecting position wherein the clip member is disengaged fromthe mating male coupling device.

A further aspect still relates to a coupling system including: a femalecoupling device, the female coupling device including: a first main bodywith a first front face, the first front face defining a first openingleading into a first fluid passageway; a stem having a stem headpositioned within a sleeve; a first spring positioned about the stemthat biases the sleeve into a closed position; a first seal that sealsbetween the main body and the sleeve; a second seal that seals betweenthe sleeve and the stem head; a third seal that is positioned at theopening of the main body; and a clip member slidably mounted on thefemale coupling device. The coupling system includes a male couplingdevice, the male coupling device including: a second main body with asecond front face, the second front face defining a second openingleading into a second fluid passageway; a valve member and a secondspring positioned within the second fluid passageway; and a major sealthat seals between the second main body and the valve member. The clipmember is slidable between a connecting position where the clip memberengages the male coupling device and a disconnecting position where theclip member is disengaged from the male coupling device. The second mainbody of the male coupling device is capable of being inserted into thefirst opening of the first main body of the female coupling device sothat the first seal and the third seal of the female coupling deviceengage the second main body of the male coupling device. The sleeve andthe valve member are displaced against the first and second springs suchthat the second seal and the major seal are disengaged so that fluidflows through the first and second fluid passageways.

DESCRIPTION OF THE DRAWINGS

Reference is now made to the accompanying drawings, which are notnecessarily drawn to scale.

FIG. 1 is a perspective of an example female coupling device.

FIG. 2 is a side view of the female coupling device of FIG. 1.

FIG. 3 is an end view of the female coupling device of FIG. 1.

FIG. 4 is a cross-sectional view of the female coupling device of FIG.1.

FIG. 5 is a perspective of an example male coupling device.

FIG. 6 is a side view of the male coupling device of FIG. 5.

FIG. 7 is an end view of the male coupling device of FIG. 5.

FIG. 8 is a cross-sectional view of the male coupling device of FIG. 5.

FIG. 9 is a side view of a coupling assembly including the female andmale coupling devices in a pre-coupled position.

FIG. 10 is a cross-sectional view of the female and male couplingdevices of FIG. 9.

FIG. 11 is a side view of the female and male coupling devices in apartially-coupled position.

FIG. 12 is a cross-sectional view of the female and male couplingdevices of FIG. 11.

FIG. 13 is a side view of the female and male coupling devices in afully-coupled position.

FIG. 14 is a cross-sectional view of the female and male couplingdevices of FIG. 13.

FIG. 15 is a perspective view of another example female coupling device.

FIG. 16 is a side view of the female coupling device of FIG. 15.

FIG. 17 is an end view of the female coupling device of FIG. 15.

FIG. 18 is a cross-sectional view of the female coupling device of FIG.15.

FIG. 19 is a perspective view of another example male coupling device.

FIG. 20 is a side view of the male coupling device of FIG. 19.

FIG. 21 is an end view of the male coupling device of FIG. 19.

FIG. 22 is a cross-sectional view of the male coupling device of FIG.19.

FIG. 23 is a side view of a coupling assembly including the female andmale coupling devices shown in FIGS. 15 and 19 in a pre-coupledposition.

FIG. 24 is a cross-sectional view of the female and male couplingdevices of FIG. 23.

FIG. 25 is a side view of the female and male coupling devices shown inFIGS. 15 and 19 in a partially-coupled position.

FIG. 26 is a cross-sectional view of the female and male couplingdevices of FIG. 25.

FIG. 27 is a side view of the female and male coupling devices shown inFIGS. 15 and 19 in a fully-coupled position.

FIG. 28 is a cross-sectional view of the female and male couplingdevices of FIG. 27.

DETAILED DESCRIPTION

The present disclosure relates to a low-spill coupling assemblyincluding a female coupling device and a male coupling device.Additional details are provided below.

Referring now to FIGS. 1-4, an example female coupling device 100 isshown.

The female coupling device 100 includes a main body 110 having a frontface 112. The front face 112 defines an opening 114 leading into a fluidpassageway 122.

The female coupling device 100 also includes a termination 118 coupledto the main body 110 using known techniques, such as sonic welding,staking, press-fitting, and threading. The termination 118 is configuredto be coupled to another component, such as a fluid line or device.

The example female coupling device 100 includes a stem 130, sleeve 136,and spring 124 positioned within the fluid passageway 122.

The stem 130 includes a base end 132 positioned against the termination118. The stem 130 also includes a stem head 134 positioned within thesleeve 136. The spring 124 is positioned about the stem 130 and biasesthe sleeve 136 into the closed position shown in FIG. 4. In thisposition, a shoulder 182 on the sleeve 136 engages a surface 184 formedby the main body 110 to limit further travel of the sleeve 136 in adirection toward the front face 112.

In this position, a first seal 142 provides a seal between the main body110 and the sleeve 136. In addition, a second seal 144 provides a sealbetween the sleeve 136 and the stem head 134. These seals limit movementof fluid through the fluid passageway 122.

A further third seal 146 is positioned at the opening 114 of the mainbody 110 to seal against a mating male coupling device 200, describedbelow.

Referring now to FIGS. 5-8, the male coupling device 200 is shown.

The male coupling device 200 includes a main body 210 having a frontface 212. The front face 212 defines an opening 214 leading into a fluidpassageway 222.

The male coupling device 200 also includes a termination 218 coupled tothe main body 210 using known techniques, such as sonic welding orstaking. The termination 218 is configured to be coupled to anothercomponent, such as a fluid line.

The example male coupling device 200 includes a valve member 230 andspring 224 positioned within the fluid passageway 222. The spring 224 isbiases the valve member 230 into the closed position shown in FIG. 8. Afront surface 232 of the valve member 230 is exposed at the front face212 of the main body 210. In this position, a shoulder 282 on the valvemember 230 engages a surface 284 formed by the main body 210 to limitfurther travel of the valve member 230 in a direction toward the frontface 212.

In this position, a first seal 242 provides a seal between the main body210 and the valve member 230. The seal limits movement of fluid throughthe fluid passageway 222.

Referring now to FIGS. 9-10, the female coupling device 100 and the malecoupling device 200 are shown in a pre-coupled position. In thisposition, the main body 210 of the male coupling device 200 is partiallyinserted into the opening 114 of the main body 110 of the femalecoupling device 100.

In this position, the front surface 232 of the valve member 230 engagesthe stem head 134. In addition, the front face 212 engages the sleeve136. Further, the third seal 146 seals against the main body 210 of themale coupling device 200 so that a fluid-tight configuration is created.

Referring now to FIGS. 11-12, the female coupling device 100 and themale coupling device 200 are shown in a partially-coupled position. Inthis position, the main body 210 of the male coupling device 200 ismore-completely inserted into the opening 114 of the main body 110 ofthe female coupling device 100.

As this occurs, the main body 210 of the male coupling device 200 ispositioned in the fluid passageway 122 so that both seals 142, 146engage the main body 210. Further, both the sleeve 136 and the valvemember 230 are displaced against the springs 124, 224, respectively.When this occurs, the seals 144, 242 are disengaged so that fluid canstart to flow through the fluid passageways 122, 222.

Referring now to FIGS. 13-14, the female coupling device 100 and themale coupling device 200 are shown in a fully-coupled position. In thisposition, the main body 210 of the male coupling device 200 iscompletely inserted into the opening 114 of the main body 110 of thefemale coupling device 100.

Both of the springs 124, 224 are compressed, and the sleeve 136 andvalve member 230 are further displaced. This assures that seals 144, 242are fully disengaged so that fluid can pass through the fluidpassageways 122, 222.

To release, the male coupling device 200 is pulled out of the femalecoupling device 100. When this occurs, the springs 124, 224 return thesleeve 136 and the valve member 230 to the resting positions shown inFIGS. 9-10.

Referring now to FIGS. 15-18, another example female coupling device 300is shown.

The female coupling device 300 includes a main body 310 having a frontface 312 and a maximum circumferential surface 313. The front face 312defines an opening 314 leading into a fluid passageway 322 (see FIG.18).

The female coupling device 300 also includes a termination 318 coupledto the main body 310 using known techniques, such as sonic welding,staking, press-fitting, and threading. The termination 318 (shown in theembodiment of FIG. 18 with a seal 319) is configured to be coupled toanother component, such as a fluid line or device. The female couplingdevice 300 includes a locking collar, herein referred to as a quickconnecting/disconnecting clip member 316, which is used to quicklydisconnect and connect the female coupling device 300 with anothercomponent.

The example female coupling device 300 includes a stem 330, sleeve 336,and spring 324 positioned within the fluid passageway 322. The stem 330includes a base end 332 positioned against the termination 318. The stem330 also includes a stem head 334 positioned within the sleeve 336. Thespring 324 is positioned about the stem 330 and biases the sleeve 336into the closed position shown in FIG. 18. In this position, a shoulder382 on the sleeve 336 engages a surface 384 formed by the main body 310to limit further travel of the sleeve 336 in a direction toward thefront face 312. In this position, a first seal 342 provides a sealbetween the main body 310 and the sleeve 336. In addition, a second seal344 provides a seal between the sleeve 336 and the stem head 334. Theseseals limit movement of fluid through the fluid passageway 322. Afurther third seal 346 is positioned at the opening 314 of the main body310 to seal against a mating male coupling device 400, as describedbelow.

In the depicted example, the clip member 316 includes a tab portion 320and a plate portion 326 interconnected to each other at roughly a rightangle in a generally L-shaped configuration. In FIG. 15, the clip member316 is in a resting or locking position. The clip member 316 can bebiased or forced into the locked position using an integral cantileveror spring 328 (see FIG. 18). The clip member 316 is moved in a directionA within an opening 338 of the main body 310 to an unlocked position.The clip member 316 can be moved to this position to, for example,connect or release another component, such as, an insert.

The tab portion 320 of the clip member 316 provides a surface for theuser to press down on the clip member 316 so as to place the clip member316 in the disconnecting position when inserting the mating malecoupling device 400. In some examples, it is not necessary to manuallyforce down on the clip member 316 when inserting the mating malecoupling device 400 as the mating male coupling device 400 uponengagement with an inner lip 348 (see FIG. 15) of the plate portion 326will force the clip member 316 down into the disconnecting position. Theplate portion 326 defines an aperture 350 (see FIG. 18) sufficientlylarge to allow the mating male coupling device 400 to extend partiallytherethrough and is generally alignable with the fluid passageway 322 ofthe female coupling device 300. The plate portion 326 slides in a slot352 extending transversely of the female coupling device 300.

In one example, side surfaces of the female coupling device 300 caninclude a shoulder portion and the plate portion 326 of the clip member316 can include barbed projections along its side edge. The barbedprojections can have a substantially flat portion for engaging theshoulder portion of the female coupling device 300 so as to prevent theclip member 316 from being inadvertently removed from the femalecoupling device 300 after it has been inserted. This assures that theclip member 316 will remain with the female coupling device 300 at alltimes in typical use.

Referring now to FIGS. 19-22, the male coupling device 400 is shown.

The male coupling device 400 includes a main body 410 having a frontface 412. The front face 412 defines an opening 414 leading into a fluidpassageway 422 (see FIG. 22).

The male coupling device 400 also includes a termination 418 coupled tothe main body 410 using known techniques, such as sonic welding orstaking. The termination 418 (shown in the embodiment of FIG. 20 with aseal 419) is configured to be coupled to another component, such as afluid line.

The example male coupling device 400 includes a valve member 430 andspring 424 positioned within the fluid passageway 422. The spring 424biases the valve member 430 into the closed position shown in FIG. 22. Afront surface 432 of the valve member 430 is exposed at the front face412 of the main body 410. In this position, a shoulder 482 on the valvemember 430 engages a surface 484 formed by the main body 410 to limitfurther travel of the valve member 430 in a direction toward the frontface 412.

In this position, a first seal 442 (e.g., major seal) provides a sealbetween the main body 410 and the valve member 430. The seal limitsmovement of fluid through the fluid passageway 422.

Referring now to FIGS. 23-24, the female coupling device 300 and themale coupling device 400 are shown in a pre-coupled position. In thisposition, the main body 410 of the male coupling device 400 is partiallyinserted into the opening 314 of the main body 310 of the femalecoupling device 300.

In this position, the front surface 432 of the valve member 430 engagesthe stem head 334. In addition, the front face 432 engages the sleeve336. Further, the third seal 346 seals against the main body 410 of themale coupling device 400 so that a fluid-tight configuration is created.

Referring now to FIGS. 25-26, the female coupling device 300 and themale coupling device 400 are shown in a partially-coupled position. Inthis position, the main body 410 of the male coupling device 400 ismore-completely inserted into the opening 314 of the main body 310 ofthe female coupling device 300.

As this occurs, the main body 410 of the male coupling device 400 ispositioned in the fluid passageway 322 so that both seals 342, 346engage the main body 410. Further, both the sleeve 336 and the valvemember 430 are displaced against the springs 324, 424, respectively.When this occurs, the seals 344, 442 are disengaged so that fluid canstart to flow through the fluid passageways 322, 422.

Referring now to FIGS. 27-28, the female coupling device 300 and themale coupling device 400 are shown in a fully-coupled position. In thisposition, the main body 410 of the male coupling device 400 iscompletely inserted into the opening 314 of the main body 310 of thefemale coupling device 300.

Both of the springs 324, 424 are compressed, and the sleeve 336 andvalve member 430 are further displaced. This assures that seals 344, 442are fully disengaged so that fluid can pass through the fluidpassageways 322, 422.

To release, the male coupling device 400 is pulled out of the femalecoupling device 300. When this occurs, the springs 324, 424 return thesleeve 336 and the valve member 430 to the resting positions shown inFIGS. 23-24.

In certain examples, the spring 328 (e.g., resilient biasing member) isdisposed below the tab portion 320. Upon pressing down on the clipmember 316, the spring 328 is displaced from its at rest position to adisplaced position. The clip member 316 is then biased upwardly suchthat the plate portion 326 rests in a circumferential groove 434 of themale coupling device 400 when in the connecting position. In otherwords, the clip member 316 is biased upwardly such that when thecircumferential groove 434 of the male coupling device 400 is alignedwith the inner lip 348 of the plate portion 326 of the clip member 316,the spring 328 will force the clip member 316 upward into engagementwith the circumferential groove 434 thereby placing the clip member 316into the connecting position and retaining the male and female couplingdevices 300, 400 in a coupled state upon the application of the fluidpressure.

In other examples, by merely inserting the male coupling device 400, theclip member 316 will be forced down into its disconnecting positionthereby doing away with the need for the user to press down on the tabportion 320 of the clip member 316. To uncouple the coupling the usersimply presses down on the clip member 16 and removes the male couplingdevice 400.

Additional details about an example latched coupling assembly areprovided in U.S. Pat. No. 7,547,047 to deCler et al. and U.S. Pat. No.5,104,158 to Meyer et al., the entirety of which are hereby incorporatedby reference.

Although the subject matter has been described in language specific tostructural features and/or methodological acts, it is to be understoodthat the subject matter defined in the appended claims is notnecessarily limited to the specific features or acts described above.Rather, the specific features and acts described above are disclosed asexample forms of implementing the claims.

What is claimed is:
 1. A low-spill coupling system, comprising: a femalecoupling device configured to releasably receive a male coupling devicein a pre-coupled position in which fluid flow is occluded between thefemale coupling device and the male coupling device, a partially-coupledposition, and a fully-coupled position in which fluid flow is providedbetween the female coupling device and the male coupling device, whereinthe female coupling device includes: a one-piece main body defining amaximum exterior circumferential surface of the female coupling device,a circular front opening at a front-most face of the female couplingdevice, and a first interior bore which has a first bore diameter andwhich extends rearward to an interior shoulder that tapers to a largerdiameter and that is positioned axially closer to the circular frontopening of the one-piece main body than to a rear end of the one-piecemain body; a forward bore seal seated in a forward groove along thefirst interior bore and radially inward from the maximum exteriorcircumferential surface of the female coupling device; a stem having astem head positioned in the first interior bore in a fixed orientationrelative to the front-most face of the female coupling device, whereinthe stem head carries a stem seal mounted to an exterior thereof anddefines a stem front face that is oriented toward the circular frontopening and that has a stem front diameter greater than half the firstbore diameter; a rear bore seal positioned rearwardly of the forwardbore seal in a rear groove along the first interior bore of theone-piece main body at a same axial distance from the circular frontopening as the stem seal, wherein the rear bore seal is positionedfurther from the circular front opening than the forward bore seal sothat the forward bore seal sealingly engages with an exterior on themale coupling device while the rear bore seal is spaced apart from themale coupling device when the male coupling device is arranged in thepre-coupled position within the interior bore; and a movable sleeveslideable within the interior bore relative to the stem head so that thestem seal is releasably engageable with an interior circumferentialsleeve surface of the sleeve, wherein the movable sleeve is biasedtoward a closed position in which the movable sleeve abuts with theinterior shoulder of the one-piece main body and simultaneously engageswith the rear bore seal and the stem seal, wherein the movable sleeve isslidable in a longitudinally rearward direction in response to movementof the male coupling device from the pre-coupled position toward thepartially-coupled position such that the sleeve contemporaneouslydisengages from the stem seal and the rear bore seal and the malecoupling device simultaneously engages with all three of the forwardbore seal, the stem seal, and the rear bore seal, and wherein themovable sleeve; and wherein the stem seal is disengaged from the movablesleeve and the male coupling device when the female coupling devicereleasably receives the male coupling device in the fully-coupledposition.
 2. The coupling system of claim 1, wherein the first interiorbore extends forward of the forward bore seal toward the circular frontopening for a forward axial length, extends between the forward boreseal and the rear bore seal for an intermediate axial length, andextends rearward of the rear bore seal for a rearward axial length,wherein the forward axial length of the fire interior bore of theone-piece main body is greater than an axial length of the forwardgroove that retains the forward seal.
 3. The coupling system of claim 1,wherein the female coupling device further comprises a quick disconnectclip member configured to releasably lock the male coupling device inthe full-coupled position.
 4. The coupling system of claim 3, whereinthe quick disconnect clip member comprises: a push tab defining alaterally outermost surface of the female coupling device, and aslidable plate movably mounted to the one-piece main body and extendingtransversely from the push tab such that the slidable plate defines afront-most surface of the clip member closest to the circular frontopening of the one-piece main body, wherein the quick disconnect clipmember is spring biased to urge the slidable plate into a releasablelocking engagement with the male main body.
 5. The coupling system ofclaim 1, wherein the female coupling device further comprises atermination member connectable with a first fluid line, the terminationmember being attached to the one-piece main body opposite from thecircular front opening and having a fourth seal of the female couplingdevice.
 6. The coupling system of claim 1, wherein further comprisingthe male coupling device.
 7. The coupling system of claim 6, wherein themale coupling device further comprises: a male main body having a malefront end configured to slide within the first interior bore of thefemale coupling device and engage the movable sleeve within the firstinterior bore; a valve member that is longitudinally slideable withinthe male main body and that has a valve seal mounted thereto, whereinthe valve member is spring biased toward the male front end so that thevalve seal is releasably engageable with the male main body, and thevalve member defines a valve front face that is configured to align withthe male front end and that has a valve front diameter greater than halfthe first bore diameter.
 8. The coupling system of claim 7, wherein themale main body of the male coupling device is shaped to simultaneouslyengage with all three of the forward bore seal, the stem seal, and therear bore seal of the female coupling device in response to the malemain body urging the movable sleeve to slide in the longitudinallyrearward direction.
 9. The coupling system of claim 7, wherein the malecoupling device further comprises: a circumferential groove defined inan exterior of the male main body and having a radially extending wallto releasably lock with a quick disconnect clip member of the femalecoupling device.
 10. The coupling system of claim 7, wherein the malecoupling device further comprises: a termination member attached to themale main body opposite from the male front end and having a ring sealmounted thereto.
 11. The coupling system of claim 7, wherein in responseto movement of the male coupling device from the pre-coupled positiontoward the partially-coupled position, the stem front face displaces thevalve member away from the male front end of the male main body andcauses the valve seal to disengage from the male main body.
 12. Thecoupling system of claim 11, wherein a maximum exterior diameter of theentire male coupling device is smaller than a maximum exterior diameterof the one-piece main body.
 13. A low-spill coupling system, comprising:a female coupling device including: a one-piece main body defining amaximum exterior circumferential surface of the female coupling device,a front opening at a front-most face of the female coupling device, anda first interior bore which has a first bore diameter and which extendsrearward to an interior shoulder that tapers to a larger diameter andthat is positioned axially closer to the front opening of the one-piecemain body than to a rear end of the one-piece main body; a forward boreseal seated in a forward groove along the first interior bore andradially inward from the maximum exterior circumferential surface of thefemale coupling device; a stem having a stem head positioned in thefirst interior bore in a fixed orientation relative to the front-mostface of the female coupling device, wherein the stem head carries a stemseal mounted to an exterior thereof and defines a stem front face thatis oriented toward the front opening and that has a stem front diametergreater than half the first bore diameter; a rear bore seal positionedrearwardly of the forward bore seal in a rear groove along the firstinterior bore of the one-piece main body at a same axial distance fromthe front opening as the stem seal, wherein the rear bore seal ispositioned further from the front opening than the forward bore seal sothat the forward bore seal sealingly engages with an exterior on a malecoupling device while the rear bore seal is spaced apart from the malecoupling device when the male coupling device is arranged in thepre-coupled position within the interior bore; and a movable sleeveslideable within the interior bore relative to the stem head so that thestem seal is releasably engageable with an interior circumferentialsleeve surface of the sleeve, wherein the movable sleeve is biasedtoward a closed position in which the movable sleeve abuts with theinterior shoulder of the one-piece main body and simultaneously engageswith the rear bore seal and the stem seal, wherein the movable sleeve isslidable in a longitudinally rearward direction in response to movementof the male coupling device from the pre-coupled position toward thepartially-coupled position such that the sleeve contemporaneouslydisengages from the stem seal and the rear bore seal, wherein the stemseal is disengaged from the movable sleeve and the male coupling devicewhen the female coupling device releasably receives the male couplingdevice in the fully-coupled position; and the male coupling deviceconfigured to releasably engage the female coupling device in apre-coupled position in which fluid flow is occluded between the femalecoupling device and the male coupling device, a partially-coupledposition, and a fully-coupled position in which fluid flow is providedbetween the female coupling device and the male coupling device, whereinthe male coupling device includes: a male main body having a male frontend configured to slide within the first interior bore of the femalecoupling device and engage the movable sleeve within the first interiorbore; a valve member that is longitudinally slideable within the malemain body and that has a valve seal mounted thereto, wherein the valvemember is spring biased toward the male front end so that the valve sealis releasably engageable with the male main body, wherein the male mainbody of the male coupling device has a male front portion shaped toinsert into the first interior bore and simultaneously engage with allthree of the forward bore seal, the stem seal, and the rear bore seal ofthe female coupling device after disengaging the valve seal and urgingthe movable sleeve to slide in the longitudinally rearward direction.14. The coupling system of claim 13, wherein the female coupling devicefurther comprises a quick disconnect clip member configured toreleasably lock the male coupling device in the full-coupled position.15. The coupling system of claim 14, wherein the quick disconnect clipmember comprises: a push tab defining a laterally outermost surface ofthe female coupling device, and a slidable plate movably mounted to theone-piece main body and extending transversely from the push tab suchthat the slidable plate defines a front-most surface of the clip memberclosest to the front opening of the one-piece main body, wherein thequick disconnect clip member is spring biased to urge the slidable plateinto a releasable locking engagement with the male main body.
 16. Thecoupling system of claim 13, wherein the female coupling device furthercomprises a termination member connectable with a first fluid line, thetermination member being attached to the one-piece main body oppositefrom the front opening and having a fourth seal of the female couplingdevice.
 17. The coupling system of claim 13, wherein the first interiorbore extends forward of the forward bore seal toward the front openingfor a forward axial length, extends between the forward bore seal andthe rear bore seal for an intermediate axial length, and extendsrearward of the rear bore seal for a rearward axial length, wherein theforward axial length of the first interior bore of the one-piece mainbody is greater than an axial length of the forward groove that retainsthe forward seal.
 18. The coupling system of claim 13, wherein the valvemember of the male coupling device defines a valve front face that isconfigured to align with the male front end and that has a valve frontdiameter greater than half the male front portion of the male main body.19. The coupling system of claim 18, wherein in response to movement ofthe male coupling device from the pre-coupled position toward thepartially-coupled position, the stem front face displaces the valvemember away from the male front end of the male main body and causes thevalve seal to disengage from the male main body.
 20. The coupling systemof claim 13, wherein a maximum exterior diameter of the entire malecoupling device is smaller than a maximum exterior diameter of theone-piece main body.